List of Articles DNA باکتریایی

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  1 - Homologous Bacterial DNA as an Adjuvant for the development of humoral and cellular immune responses against Pasteurella multocida in sheep
  Keivandokht Abbasi Yahya Tahamtan Elham Moazamian Mohammad H Hosseini
  10.30495/jmw.2022.1954395.2013
  Backgronnd & Objectives: Pasteurella (P.) maltocida is the cause of pasteurellosis. Animals and sometimes humans are involved with this bacterium. The aim of this study was to evaluate immune responses in sheep vaccinated with inactive antigen along with alum and Ab More

  Backgronnd & Objectives: Pasteurella (P.) maltocida is the cause of pasteurellosis. Animals and sometimes humans are involved with this bacterium. The aim of this study was to evaluate immune responses in sheep vaccinated with inactive antigen along with alum and AbDNA adjuvant by tracking IgG and cytokine levels on serum samples.Material & Methods: Sheep were immunized with two doses of inactivated vaccine with formalin at an interval of 2 weeks. Alum and DNA of P.maltocida serotype A strain were used as an adjuvant. One milliliter of immunogen was inoculated subcutaneously to the animals. After  ELISA design, immune response was evaluated by measuring specific IgG antibody titer and TNF-α measurement on serum samples and lymphocyte cell culture.Results: The antibody titer in the group receiving DNA was higher than the group receiving Alum and the control groups. The highest antibody level (1.463) was related to the FIV-AbDNA group in the fourth week. In the FIV-Alum group, the highest titer was 1.054, which indicates a weaker immune response compared to the DNA group. AbDNA also increased the production of TNF-α. TNF-α in immunized animals increased significantly compared to the control groups. The highest titer of TNF-α (1.44) was related to the FIV-AbDNA group on the serum sample.Conclusion: P.maltocida antigen together with bacterial DNA as an adjuvant is an alternative candidate for making new vaccines against P.maltocida. Considering the ability of AbDNA to   create immune responses through the release of different cytokines, it is suggested to evaluate different types of cytokines.  Manuscript profile
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  2 - The effect of homologous and heterologous Bacterial DNA on the development of immune responses against Pasteurella multocida in BALB / c mice
  Yahya Tahamtan Maryam Homayoon Mohammad Kargar
  Background & Objectives: Pasteurella multocida is a principal pathogen of domestic animals causing agents of pneumonia and hemorrhagic septicemia in cattle, sheep, and goats, fowl cholera in chickens, and progressive atrophic rhinitis in swine and as well as an oppo More

  Background & Objectives: Pasteurella multocida is a principal pathogen of domestic animals causing agents of pneumonia and hemorrhagic septicemia in cattle, sheep, and goats, fowl cholera in chickens, and progressive atrophic rhinitis in swine and as well as an opportunistic pathogen of humans. In this study, we investigated the humoral and cellular immune responses and protective immunity conferred by an iron-inactivated vaccine with two different bacterial DNA as an adjuvant. Materials & Methods: P. multocida was grown in BHI broth, inactivated with FeCl3, adjuvanted with alum and P. multocida A (homologous DNA) and P. multocida B (heterologous DNA) bacterial DNAs. BALB/c mice were immunized with two whole-cell inactivated vaccine doses at 2 weeks apart. The animals were challenged 4 weeks after booster immunization. The serum antibodies titer was tested by ELISA. At 28 days post-immunization, cell mediates immunity responses were measured by assay of DTH and IL-6 and IL-12 in the serum samples. Results: Our results showed the levels of antibodies in bDNA adjuvant groups were higher than the alum adjuvant vaccine group. Peak antibody titers of 0.372 were obtained in the IIA+AbDNA group. The protection rate of the AbDNA adjuvant vaccine was better than of other adjuvant vaccines and they protected 100% of mice challenge groups. Peak serum IL-6 and IL-12 titers were achieved in the IIA+AbDNA groups. Conclusion: These studies indicate that bDNA is effective as immune adjuvants and because of its stimulating properties it can be used as an inducer of humoral and cellular immune responses for vaccination applications. The findings also showed a better ability of homologous bDNA to induce immune responses. Manuscript profile